Grain-scale



(No Model.)

A. W. BUTTS.

GRAIN SCALE.

No. 448,816. Patented Mar. 17,1891.

S C S 5 C 9 THE News warms cu, vNmTo-umtL, wusnmm'on. c. c.

:aiTED STATES PATENT Orricn.

ALEXANDER "W. BUTTS, OF OELINA, TEXAS.

GRAIN-SCALE.

EPEGIFXCATION forming part of Letters Patent No. 448,316, dated March1'7, 1891.

Application filed June 30, 1890.

T0 61/ whom, it may concern/.-

Be it known that I, ALEXANDER W. Burrs, a citizen of the United States,residing at Oelina, in the county of Collin and State of Texas, haveinvented a new and useful Grain-Scale, of which the following is aspecification.

This invention has relation to improvements in grain-scales, especiallyadapted for location at the rear end of a thrashing-machine and forreceiving therefrom the thrashed grain, weighing and subsequentlybagging the same in predetermined quantities.

The objects and advantages of the invention, together with the novelfeatures thereof, will be hereinafter described, and particularlypointed out in the claims.

Referring to the drawings, Figure 1 is a perspective of a grain-scaleconstructed in accordance with my invention. Fig. 2 is a longitudinalvertical section of the same.

Like numerals of reference indicate like parts in all the figures of thedrawings.

1 designates an ordinary conveyer adapted to be attached to the rear endof at-hrashingmachine and having its interior provided with an endlesscup-belt for elevating the grain to the upper end of the conveyer anddelivering said grain into the depending dischargespout 52, in whichsaid conveyer terminates. The lower end of the spout is reduced, asshown, and mounted in opposite guides below such reduced point is areciprocating cut-off 3, the rear end of which projects beyond the wallof the conveyor.

4i designates a scale-beam, which terminates at its front end in a yoke5, fulcrumed in rear of its end, as at 6, to the opposite side walls ofthe discharge-spout above the cut-off. The outer end of the scale-beamis provided with a counterpoise 7 and with a movable weight 8, thelatter designed to slide upon the beam in accordance with the amount ofgrain to be successively weighed.

0 designates a platform, which is suspended from the free ends orterminals of the yoke by means of a pair of opposite suspensionbails 10,the upper ends of which are loosely pivoted in the ends of the yoke, asat 11. The platform 9 is also provided with a pair of verticalbag-supportin g standards 12, in which a bag may be mounted and have its upperedge turned over, and thus its mouth main- Serial No. 357,246. (Nomodel.)

tained in an open position immediately un der the cut-off.

13 designates a bell-crank lever provided at its rear end with a dog 14:and pivoted at its angle, as at 16, in a pair of bearing-ears 17,projecting laterallyfrom the wall of the conveyer 1. The upper branch ofthebellcrank lever loosely engages a loop 18, depending from the loweredge of the scale-beam, and the lower end or branch of said bell-cranklever is pivoted, as at 19, to the rear or extended end of the cut-offThe operation of the invention is as follows: The grain carried up bythe grain-elevator is delivered into the delivery-spout and passes fromthence into the bag supported upon the platform underneath said spout.The weight that is influencing the scale-beam elevates the platform sothat the mouth of the bag is directly under and in close proximity tothe mouth of the discharge. The upper branch of the bell-crank lever ispressed upon so that its lower terminal is rearwardly moved and opensthe cut-off. iVhen a sufficient quantity of grain has passed from thedelivery-spout into the bag, and its weight serves to counterbalance theweight upon the beam, said beam is tilted and the platform with the baglowered. As the bag is lowered, the upper terminal of the bell-cranklever is elevated by reason of the fact that its connection with thebeam is in rear of the point of fulcrum of the said beam,and

consequently the lower end of the bell-crank lever is forced inwardly,so that a cutting off of the grain is effected. The bag is now removedand a second bag mounted in position. As soon as the bag is removed theweight serves to depress the beam and elevate the platform and,furthermore, withdraw the cut-off, whereby the filling operationrecommences.

18 designates a register for registering the numberof bushels of grainweighed, said register being operated by a connecting-rod 10, the lowerend of which is secured to the yoke 5.

19' designates a flat spring secured to the conveyer and projectingupwardly and having contact with the lug or dog 14, and serves to closethe cut-off. This spring exerts no tendency to raise the beam until theweight of the grain raises said beam, but simply remains inactive untilthe weighted end of the beam is elevated and presses rearwardly' tion ofthe platform during the operation ofremoving and replacing the bag.

22 designates a guide-rod secured to the wall of the conveyer, and oversaid rod rides an eye 23 projecting from the adjacent end of theplatform, whereby the platform is guided in its vertical reciprocations.

By the lever 20 the scale-beam may be locked in a'raised position andthe platform in a lowered position even after the bag of grain has beenremoved, so that the beam will not return andelevate the platform andopen the valve as soon as the bag is removed. In this way an empty bagmaybe substituted fora filled bag, the operator readily regulating theoperation of the scale by means of the lever.

1. The combination, with the dischargespout and the cut-off located atthe lower end of the same, of a scale-beam terminating at its front endin a yoke pivoted between its ends to the opposite sides of the spout, abagsupporting platform depending from the front ends of the yoke, and abell-crank lever pivoted at its angle to the casing, connectedat itsupper end to the yoke in rear of its pivot and at its lower end to theend of the cut-0E, substantially as specified.

2. In a grain-scale, the combination, with Having described myinvention, what I claim isported by the'bails, a cut-off mounted forsliding in the spout, a pair of bearing-ears projecting from theconveyer, a bell-crank lever pivoted at its angle in said ears, providedbelow its pivot with a rearwardly-disposed lug, the upper terminal ofthe lever loosely engaging a loop projecting from the scale-beam'in rearof its fulcrum and the lower terminal of said lever being pivoted to thecut-01f, and a fiat spring secured to the conveyer and having its freeend terminating ;against the lug of said lever, substantially asspecified.

3. The combination, with the casing terininating in the overhangingspout and the valve located in the latter, of the scale-beam piv-- otedto one side of the spout, the bell-crank lever pivoted at its angle tothe casing, at its upper end to the beam and at its lower end to thevalve, the platform suspended from the front end of the beam, and thelever 20, pivoted to the casing in rear of the fulcrum of the beam andadapted to beswung under and support the same, substantially asspecified. In testimony that I claim the foregoing as my own I havehereto affixed my signature in presence of two witnesses.

ALEXANDER WV. BUTTS. Witnesses:

A. J. RALLER, B. C. BUCHANAN.

